HP Pavilion 520w says Video Adaptor is onboard in chipset 810e. Can I upgrade a to a PCI or AGP card?

like a geforce or radeon?|||I just checked the specifications on your HP Pavilion 520w and it has neither an AGP or a PCI Express slot.

You are stuck with the on board video or a card that uses the standard PCI slot, which would not give much improvement.

That is a pretty old model.|||Only if your motherboard supports PCI-Express.

That is if it has a PCI-Express slot available.

You'll have to check the HP website for info on your PC's

specifications.